text: # -*- coding: utf-8 -*-
  
  def fibonacci(ene):
      a = 0
      b = 1
      contador = 1
      fibo = 0
      while contador < ene:
          fibo = b + a
          a = b
          b = fibo
          contador += 1
      return fibo
  
  
  print('fibonacci(50) = ' + str(fibonacci(50)))
  